Wait, this whole thing is a cult? I'm afraid that my true lord and master, the dark priest Cthulhu won't allow me to continue to be a part of this when he arises from his watery tomb in R'lyeh to enslave humanity.

Tell them that mankind was not meant to know BJJ. Tell them to practice Aikido and Chun in blissful ignorance, secure in the knowlege that what we carry will be taken to our graves. No man can know the eldrich horror of balls to the face, and remain sane.